Hanna HI 901 Owner's manual

INSTRUCTION MANUAL

HI 901 / HI 902

AUTOMATIC TITRATOR

NaOH Titrant Conc.

StandardizeElectrode

General

OptionsSelect

MethodMethod

OptionsBurettepH/mV

ATCEndpointVolumepH

NoResult

1300/1300RPM

15:44:31Nov12,2003

N(eq/L)

0.0

0

NaOH

0.1 M

TABLE OF CONTENTS

Chapter 1. INTRODUCTION

Chapter 2. SETUP

Chapter 3. USER INTERFACE

Chapter 4. GENERAL OPTIONS

Chapter 5. METHODS

Chapter 6. TITRATION MODE

Chapter 7. pH & mV MODE

Chapter 8. AUXILIARY FUNCTIONS

Chapter 9. MAINTENANCE, PERIPHERALS

Appendix 1. TECHNICAL SPECIFICATIONS

Appendix 2. BACK TITRATION (HI 902 only)

Appendix 3. MULTIPLE EQUIVALENCE POINTS (HI 902 only)

Appendix 4. ACCESSORIES

Dear customer,

Thank you for choosing a Hanna Instruments Product.

This instruction manual has been written for the HI 901 / HI 902 Titrator products.

Please read this instruction manual carefully before using the instrument. This manual will

provide you with the necessary information for the correct use of the instrument.

All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of the copyright

owner, Hanna Instruments Inc., 584 Park East Drive, Woonsocket, Rhode Island, 02895, USA.

1-1

INTRODUCTION

1INTRODUCTION

HI 901 and HI 902 are automatic titrators with high accuracy, great flexibility and repeatability.

The titrators are designed to perform a variety of potentiometric titrations, allowing the user

to obtain both good results and high speed analysis.

The main attributes of these titrators are:

Flexibility Support up to 100 titration methods (standard and user defined).

High accuracy Precise dosing system (under 0.1% accuracy).

Precise mV and pH measurements (± 0.1 mV and ± 0.001 pH accuracy).

Interpolated end point volume.

Repeatability Powerful built-in algorithms for equivalence point detection (first derivative and second

derivative detection algorithms, filtered derivatives option, settable range for equivalence

point detection).

Fixed end point mV or pH.

Quick results Standard titration methods.

Pre-titration dosing feature.

Dynamic / Linear dosing feature.

Complete report The results are displayed directly in the selected units.

Titration graph can be displayed on line and saved.

User customized reports can be printed, saved on floppy disk or transferred to PC via

RS232 interface.

The sample information and data stamp are included in the report.

Direct measurements The titrator can also be used for precise mV, pH and temperature measurements.

Report of data logging is available for direct measurements.

GLP features Up to 5 standardization points for the pH electrode.

Reminders for titrant age and standardization expiration.

Fields for specific annotations.

Large graphical display 7.5 B/W graphical display with backlight.

Easy to view text and graphs.

Lots of information on each screen.

Self diagnosis and Integrated help is available.

integrated help Self diagnosis features for peripheral devices including pump, valve, burette, stirrer.

Error management with warning and error messages.

Predefined troubleshooting titration methods.

This manual provides information regarding installation and functionality of the titrator, pointing

out hints and refined operation suggestions.

Before beginning to work with the titrator it is recommended to become familiar with its

various features.

1-2

INTRODUCTION

2-1

SETUP

Chapter 2. Contents

2SETUP ................................................................................................... 2-3

2.1 Unpacking ............................................................................................. 2-3

2.2

Safety Measures

................................................................................... 2-4

2.3 Installation ........................................................................................... 2-5

2.3.1 Titrator Front View ...................................................

.......

...

..

....

.

..............

2-5

2.3.2 Titrator Rear View

........................................................

............................ 2 - 5

2.3.3 Titrator Left-side View ...........................................

.....

.......

...

..............

2-6

2.3.4 Titrator Assembly ...................................................

.....

.......

..

.................... 2 - 6

2.3.4.1 Assembling Stirrer Stand and Support ....................................................... 2 - 6

2.3.4.2 Attaching Stirrer ..........................................

........

......

........................... 2 - 7

2.3.4.3 Connecting the Pump ........................................................................... 2 - 8

2.3.4.4 Attaching Burette Blank Support ....................

...........

.................

..............

2-9

2.3.4.5 Attaching the Burette ......................................

....................

.................. 2 - 9

2.3.4.6 Electrical Connections ......................................

..............

..

......................

2-10

2.3.5 Connection to Earth ....................................

..............................................

2-11

2.3.6 Floppy Disk Drive ...................................................

.....

.............................. 2 - 1 1

2-2

SETUP

2-3

SETUP

2SETUP

2.1 Unpacking

The titrator and the accessories are shipped in a single box containing:

ITEM QUANTITY

1 Titrator............................................................................... 1

2 Pump Assembly.............................

...

.................................. 1

3 Burette Assembly................................................................. 1

 Burette (with 25 mL syringe)

 Aspiration Tube with Fitting and Protection Tube

 Dispensing Tube with Normal Dispensing Tip, Fitting,

Protection Tube and Tube Guide

 Tube Locks

 Tool for Valve Fitting and Burette Cap Removal

 Light Spectrum Protection Screen

4 Stirrer Support, Stand, Collar and Positioning Screw................ 1

5 Burette Blank Support.......................................................... 1

6 Pump and Burette Locking Screws with Plastic Head................ 2

9 Temperature Sensor.............................................................. 1

10 Shorting Cap....................................................................... 1

11 Power Cable........................................................................ 1

12 RS232 Cable....................................................................... 1

13 Instruction Manual Binder...................................................... 1

14 Start-up Disk (FDD with Titrator Installation Kit)..................... 1

15 HI 900 PC Application (FDD with Installation Kit).................... 1

16 Quality Certificate................................................................ 1

See Appendix 4 section A 4.3 Titrator components for pictures.

If any of the items is missing or damaged, please contact your sales representative.

Note: Save all packing materials until you are sure that the instrument functions correctly.

Any damaged or defective items must be returned in their original packing materials

together with the supplied accessories.

2-4

SETUP

2.2 Safety Measures

The following safety measures must be followed:

1. Always ensure that the power-supply cable is connected to a grounded main power plug.

2. Never connect or disconnect the pump assembly with the titrator turned on.

3. Verify that the burette and the attached tubing are as described in this manual (see 9.1

Burette Maintenance section for more details).

4. Always check that the titrant bottle and the titration beaker are firmly sitting on a flat

surface.

5. Always wipe up spills and splashes immediately.

6. Avoid the following environmental working conditions:

 Severe vibrations

 Direct sunlight

 Atmospheric relative humidity above 95% non-condensing

 Environment temperatures below 10°C and above 40°C and a normal humidity range

 Explosion hazards

7. Have the titrator serviced only by qualified service personnel.

2-5

SETUP

2.3 Installation

2.3.1 Titrator Front View

2.3.2 Titrator Rear View

NaOH

0.1 M

Positioning collar

for stirrer adjustment

Locking screws

input

2-6

SETUP

2.3.3 Titrator Left-side View

2.3.4 Titrator Assembly

Note: Assembly operations must be completed before connecting the titrator to the power-supply

voltage!

2.3.4.1 Assembling Stirrer Stand and Support

Follow these steps to assemble the stirrer:

 Remove the screws (2) from the titrator chassis (1).

 Attach the stirrer stand (3)

to the titrator chassis. Make sure

to position the stirrer

stand close to the wall of the chassis.

 Tighten the stirrer stand (3) using the previously removed screws (2).

 Screw the stirrer support (4) in the stirrer stand (3).

2-7

SETUP

2.3.4.2 Attaching Stirrer

To attach the stirrer to titrator, follow these steps:

 Attach the propeller (2) to the stirrer (1) by pressing it onto the stirrer shaft.

 Insert the pH electrode (3) and temperature sensor (4) into the dedicated holes on

the stirrer. Push them in until they are tightened in a stable position.



Slide the stirrer on the stirrer support and set the height by

tightening the

screw

located on the positioning collar (5).

2-8

SETUP

2.3.4.3 Connecting the Pump

To connect the pump, follow these steps:

 Retrieve the pump cable from inside the bay. The pump 1 connector is located in

the

left side bay.



Connect the cable to the pump as shown in the figure below. The pump connector is

located in the lower part of the pump, near the motor.

 Insert the pump (2) into the dedicated bay. Lower the pump until it reaches the

lowest position, then slide it towards the front of the titrator chassis (1) until it is

firmly latched.

 Secure the pump with the loking screw (3).

2-9

SETUP

HI 902 only:

Follow the previous steps (2.3.4.3) to connect and attach the second pump.

2.3.4.4 Attaching Burette Blank Support (HI 901 only)

The burette blank support installation procedure is as follows:

 Insert burette blank support (4) in the dedicated bay - on the right side (see the

previous picture). Lower the burette blank support until it reaches the lowest position,

then push it toward the front of the titrator chassis (1) until it is firmly latched.

 Secure the burette blank support with the locking screw (5).

2.3.4.5 Attaching Burette

Make sure that the mark from the valve actuating cap and from the burette body are aligned

as shown in the figure below.

Take care to have a correct coupling between the pump plunger (2) and the syringe piston

(1) and also when sliding the burette onto its support, consider the alignment between the

valve actuating cap and the valve positioning wheel, as shown in the figure below.

2-10

SETUP

2.3.4.6 Electrical Connections



Connect the pH electrode to the BNC connector (5).

 Connect the tempera

ture sensor to the RCA connector (6).

 Connect the stirrer to the MINI-DIN connector (7).

 Connect the power-supply cable to the power supply connector (2).

Nr Function Type of Connector

1 Power switch

2 Power supply (115, 230 VAC, 50-60 Hz) IEC Power line connector

3 Earth connector 5 mm screw

4 Reference electrode Ø 4 mm banana socket

5 Connection for pH or ORP indicating half-cell BNC socket

or combination electrodes (pH/mV)

6 Temperature sensor RCA socket

7 Stirrer 4-pin mini DIN

8 Connector for expansion device 8-pin DIN socket

9 External PC keyboard 6-pin mini-DIN (Standard PS2)

10 External display Standard VGA display 15-pin socket

11 RS232 interface Standard DB 9 pin socket

12 Printer standard DB 25pin socket

2-11

SETUP

2.3.5 Connection to Earth

It is important that the titrator has a good connection to Earth. The titrator is properly

grounded through the power cord and for added confidence the unit can be connected to

Earth using the optional 5 mm screw and the nut connection located on the rear panel of

titrator.

2.3.6 Floppy Disk Drive

Report files, new created (user) methods, standard methods can be transferred to and

from the titrator using a standard 3.5 floppy disk.

Connect to Earth (optional)

2-12

SETUP

3-1

USER INTERFACE

Chapter 3. Contents

3 USER INTERFACE .................................................................................. 3-3

3.1 Start Up

...........................................

........................

..............................

3-3

3.2 Description ............................................................................................ 3-4

3.2.1 Keypad

...........................................................................

...

......................

3-4

3.2.1.1 Function Keys ..................................................................................... 3 - 4

3.2.1.2 Option Keys ...................................................

..................................... 3 - 4

3.2.1.3 Arrow Keys .........................................

.............

.................................. 3 - 5

3.2.1.4 Numeric Keys .........................................................

..........

.................. 3 - 5

3.2.1.5 Enter Key ........................................................

....................

............... 3 - 5

3.2.2 Display ...........................................................

.......

..

.....

........................... 3 - 5

3.2.3 The Main Screen ..........................................

..........

....

..

.........

.

................... 3 - 6

3.3 Menu Navigation .......................................

....

........................................3-7

3.3.1 Selecting an Option ................................................................................... 3 - 7

3.3.2 Selecting a Menu Item ............................................................................... 3 - 7

3.3.3 Entering Text ....................

..........

...

....

....................................................... 3 - 7

3.3.4 Saving Modifications ..................................................

..

...

..

......................... 3 - 8

3-2

USER INTERFACE

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